About 1 in 3 AA 4520 flights from Washington arrived 15+ minutes late, diverted or cancelled over the past year (35%); 6.7% were cancelled. The typical flight landed 3 minutes early.
AA 4520: DCA → IND
Scheduled to leave Washington at 7:45 p.m. local time, operated by Republic Airways as YX 4520. Over the past year it arrived on time 65% of the time (179 flights), in line with other AA flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.
Usually American Airlines's last flight of the day from Washington to Indianapolis (100% of days). American Airlines's last DCA–IND flight was cancelled 5.8% of the time, against 3.4% for its earlier ones. If it's cancelled, the next American Airlines flight is usually around 6:30 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 30 | 57% |
| Tuesday | 30 | 67% |
| Wednesday | 30 | 63% |
| Thursday | 30 | 67% |
| Friday | 30 | 77% |
| Sunday | 29 | 59% |
Why it was late
All flights DCA → IND · Connecting off AA 4520? Check the risk
Questions
How often is AA 4520 from DCA to IND late?
American Airlines 4520 from Washington, DC to Indianapolis, IN arrived 15 or more minutes late, was diverted or was cancelled on 35% of 179 scheduled flights between September 2025 and August 2026. 6.7% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check American Airlines for today's flight. Method.